<template>
  <div>
    <el-upload
      v-if="type == 'url'"
      :action="uploadUrl"
      :before-upload="handleBeforeUpload"
      :on-success="handleUploadSuccess"
      :on-error="handleUploadError"
      name="file"
      :show-file-list="false"
      :headers="headers"
      class="editor-img-uploader"
    >
      <i ref="uploadRef" class="editor-img-uploader" />
    </el-upload>
    <div class="editor">
      <quill-editor
        ref="quillEditorRef"
        v-model:content="content"
        contentType="html"
        :options="options"
        :style="styles"
        @textChange="(e) => emits('update:modelValue', content)"
      />
    </div>
  </div>

</template>

<script setup>
import { QuillEditor } from '@vueup/vue-quill';
import '@vueup/vue-quill/dist/vue-quill.snow.css';
import { getToken } from '@/utils/auth';

const emits = defineEmits(['update:modelValue']);


const { proxy } = getCurrentInstance();

const quillEditorRef = ref();
const uploadUrl = ref(import.meta.env.VITE_APP_BASE_API + '/common/upload'); // 上传的图片服务器地址
const headers = ref({
	Authorization: 'Bearer ' + getToken()
});

const props = defineProps({
	/* 编辑器的内容 */
	modelValue: {
		type: String,
	},
	/* 高度 */
	height: {
		type: Number,
		default: null,
	},
	/* 最小高度 */
	minHeight: {
		type: Number,
		default: null,
	},
	/* 只读 */
	readOnly: {
		type: Boolean,
		default: false,
	},
	/* 上传文件大小限制(MB) */
	fileSize: {
		type: Number,
		default: 5,
	},
	/* 类型（base64格式、url格式） */
	type: {
		type: String,
		default: 'url',
	}
});

const { readOnly } = toRefs(props);

const options = reactive({
	theme: 'snow',
	bounds: document.body,
	debug: 'warn',
	modules: {
		// 工具栏配置
		toolbar: [
			['bold', 'italic', 'underline', 'strike'],      // 加粗 斜体 下划线 删除线
			['blockquote', 'code-block'],                   // 引用  代码块
			[{ list: 'ordered' }, { list: 'bullet' }],      // 有序、无序列表
			[{ indent: '-1' }, { indent: '+1' }],           // 缩进
			[{ size: ['small', false, 'large', 'huge'] }],  // 字体大小
			[{ header: [1, 2, 3, 4, 5, 6, false] }],        // 标题
			[{ color: [] }, { background: [] }],            // 字体颜色、字体背景颜色
			[{ align: [] }],                                // 对齐方式
			['clean'],                                      // 清除文本格式
			['link', 'image', 'video']                      // 链接、图片、视频
		],
	},
	placeholder: '请输入内容',
	readOnly: readOnly.value
});

const styles = computed(() => {
	const style = {};
	if (props.minHeight) {
		style.minHeight = `${props.minHeight}px`;
	}
	if (props.height) {
		style.height = `${props.height}px`;
	}
	return style;
});

const content = ref('');
watch(() => props.modelValue, (v) => {
	if (v !== content.value) {
		content.value = v === undefined ? '<p></p>' : v;
	}
}, { immediate: true });

// 如果设置了上传地址则自定义图片上传事件
onMounted(() => {
	if (props.type == 'url') {
		const quill = quillEditorRef.value.getQuill();
		const toolbar = quill.getModule('toolbar');
		toolbar.addHandler('image', (value) => {
			if (value) {
				proxy.$refs.uploadRef.click();
			} else {
				quill.format('image', false);
			}
		});
	}
});

// 上传前校检格式和大小
function handleBeforeUpload(file) {
	const type = ['image/jpeg', 'image/jpg', 'image/png', 'image/svg'];
	const isJPG = type.includes(file.type);
	// 检验文件格式
	if (!isJPG) {
		proxy.$modal.msgError('图片格式错误!');
		return false;
	}
	// 校检文件大小
	if (props.fileSize) {
		const isLt = file.size / 1024 / 1024 < props.fileSize;
		if (!isLt) {
			proxy.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
			return false;
		}
	}
	return true;
}

// 上传成功处理
function handleUploadSuccess(res, file) {
	// 如果上传成功
	if (res.code == 200) {
		// 获取富文本实例
		const quill = toRaw(quillEditorRef.value).getQuill();
		// 获取光标位置
		const length = quill.selection.savedRange.index;
		// 插入图片，res.url为服务器返回的图片链接地址
		quill.insertEmbed(length, 'image', import.meta.env.VITE_APP_BASE_API + res.fileName);
		// 调整光标到最后
		quill.setSelection(length + 1);
	} else {
		proxy.$modal.msgError('图片插入失败');
	}
}

// 上传失败处理
function handleUploadError() {
	proxy.$modal.msgError('图片插入失败');
}
</script>

<style>
.editor-img-uploader {
  display: none;
}
.editor, .ql-toolbar {
  white-space: pre-wrap !important;
  line-height: normal !important;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}
.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}
.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}
.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}
.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
</style>
